RT Structure Set Selection

{
  "resourceType" : "ImagingSelection",
  "id" : "example-rt-structure-set-region-selection",
  "identifier" : [{
    "system" : "urn:dicom:uid",
    "value" : "urn:oid:1.2.840.113747.20080222.234082332589842666931650220811572.11.1"
  }],
  "status" : "available",
  "code" : {
    "text" : "Region of interestimagingselection-example-segmentation-image-selection.xml within a DICOM RT Structure Set instance"
  },
  "subject" : {
    "type" : "Patient",
    "identifier" : {
      "system" : "https://fhirhospital.org",
      "value" : "ISRNEJAWJHZOTNBS"
    }
  },
  "basedOn" : [{
    "type" : "ServiceRequest",
    "identifier" : {
      "type" : {
        "coding" : [{
          "system" : "http://terminology.hl7.org/CodeSystem/v2-0203",
          "code" : "ACSN"
        }]
      },
      "value" : "W12342398",
      "assigner" : {
        "reference" : "Organization/dicom-organization"
      }
    }
  },
  {
    "reference" : "ServiceRequest/example"
  }],
  "derivedFrom" : {
    "type" : "ImagingStudy",
    "identifier" : {
      "system" : "urn:dicom:uid",
      "value" : "urn:oid:1.2.840.113747.20080222.234082332592522666931650220811572"
    }
  },
  "studyUid" : "1.2.840.113747.20080222.234082332589846966931650220811572",
  "seriesUid" : "1.2.840.113747.20080222.234082332589846992931650220811572.11",
  "seriesNumber" : 1,
  "frameOfReferenceUid" : "1.2.840.113747.20080222.234082332589842666931650220811572.0",
  "instance" : [{
    "uid" : "1.2.840.113747.20080222.234082332589846992522666220811572.11.0",
    "sopClass" : "urn:oid:1.2.840.10008.5.1.4.1.1.481.3",
    "regionOfInterest" : [1]
  }]
}